Convertible trimmer head



FIG. 1 is a top perspective view of a convertible trimmer head;

FIG. 2 is a front view thereof, the rear view being a mirror image;

FIG. 3 is a side view thereof, the opposite side being a mirror image;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a bottom perspective view thereof.

The broken lines in the drawings illustrate portions of the convertible trimmer head and form no part of the claimed design. 

CLAIM The ornamental design for a convertible trimmer head, as shown and described. 